Rejecting reports of disruption in oxygen supply as the reason behind the fatalities at Gorakhpur's Baba Raghav Das Medical College hospital, Uttar Pradesh chief minister Yogi Adityanath said the death of 30 infants was due to encephalitis. Flanked by Union health minister JP Nadda, the chief minister admitted that while the state government has done a lot of work to tackle the disease, there still remains much room for improvement.